Spray transfer produces high deposition rates with high welding-wire efficiencies.

• A. True
• B. False
• C. Low deposition rates
• D. Poor wire efficiency

Answer: (A)

Spray transfer in GMAW uses a high-current, stable arc to emit a continuous spray of molten wire droplets that are transferred to the weld pool. Because nearly all of the feed wire is melted and incorporated into the weld metal, the deposition rate is very high and the welding-wire efficiency is also high—the wire you feed mostly ends up as weld metal rather than being lost as spatter or re-melted elsewhere. This mode works best with argon-rich shielding gas and appropriate wire diameter, and it’s favored for flat or horizontal positions where high deposition and efficiency are beneficial. So the statement is true.